Also, I don't think that the way to deal with "there is content on a platform that I don't like" is to run from it. It's to make better filtering systems to choose what I want. Two reasons:
First, some people like different things. They shouldn't have to use different platforms just for that.
Second, stuff like spam will show up anywhere that has decent size anyway eventually, once there are enough eyeballs for it.
I think that the goal should be to have plenty of content of all sorts on the Threadiverse, and then just have good filtering tools that are hard to subvert.
Reddit didn't let people build the filtering tools they wanted in and in some cases -- like when it came to their own ads -- were actively opposed to that. The Threadiverse solves that problem for me.